.app{
	width: 100%;
	height: 100vh;
	background-color: #e8e8e8;
	position: relative;
	display: flex;
	justify-content: center;
	align-items: center;
}
.taiji{
	width: 200px;
	height: 200px;
	position: relative;
	border-radius: 50%;
	box-shadow: 0px -10px 20px 0px #2AF598, 0px 10px 20px 0px #08AEEA;
	animation: zhuan 5s linear infinite;
}
.taiji:before,.taiji:after{
	content: '';
	width: 200px;
	height: 100px;
	position: absolute;
	background-color: #fff;
	border-radius: 100px 100px 0 0;
}
.taiji:after{
	top: 100px;
	background-color: #000;
	border-radius: 0 0 100px 100px;
}
.yu:before,.yu:after{
	content: '';
	width: 24px;
	height: 24px;
	position: absolute;
	top: 50px;
	left: 100px;
	border-radius: 50%;
	background-color: #000;
	border: 38px solid #fff;
	z-index: 1;
}
.yu:after{
	left: 0;
	background-color: #fff;
	border: 38px solid #000;
}
@keyframes zhuan{
  to {
    transform: rotate(360deg);
  }
}
